libavcodec/i386/dsputil_h264_template_mmx.c

   1 /*
   2  * Copyright (c) 2005 Zoltan Hidvegi <hzoli -a- hzoli -d- com>,
   3  *                    Loren Merritt
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * MMX optimized version of (put|avg)_h264_chroma_mc8.
  24  * H264_CHROMA_MC8_TMPL must be defined to the desired function name
  25  * H264_CHROMA_OP must be defined to empty for put and pavgb/pavgusb for avg
  26  * H264_CHROMA_MC8_MV0 must be defined to a (put|avg)_pixels8 function
  27  */
  28 static void H264_CHROMA_MC8_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y, int rnd)
  29 {
  30     const uint64_t *rnd_reg;
  31     DECLARE_ALIGNED_8(uint64_t, AA);
  32     DECLARE_ALIGNED_8(uint64_t, DD);
  33     int i;
  34
  35     if(y==0 && x==0) {
  36         /* no filter needed */
  37         H264_CHROMA_MC8_MV0(dst, src, stride, h);
  38         return;
  39     }
  40
  41     assert(x<8 && y<8 && x>=0 && y>=0);
  42
  43     if(y==0 || x==0)
  44     {
  45         /* 1 dimensional filter only */
  46         const int dxy = x ? 1 : stride;
  47
  48         rnd_reg = rnd ? &ff_pw_4 : &ff_pw_3;
  49
  50         asm volatile(
  51             "movd %0, %%mm5\n\t"
  52             "movq %1, %%mm4\n\t"
  53             "movq %2, %%mm6\n\t"         /* mm6 = rnd */
  54             "punpcklwd %%mm5, %%mm5\n\t"
  55             "punpckldq %%mm5, %%mm5\n\t" /* mm5 = B = x */
  56             "pxor %%mm7, %%mm7\n\t"
  57             "psubw %%mm5, %%mm4\n\t"     /* mm4 = A = 8-x */
  58             :: "rm"(x+y), "m"(ff_pw_8), "m"(*rnd_reg));
  59
  60         for(i=0; i<h; i++) {
  61             asm volatile(
  62                 /* mm0 = src[0..7], mm1 = src[1..8] */
  63                 "movq %0, %%mm0\n\t"
  64                 "movq %1, %%mm2\n\t"
  65                 :: "m"(src[0]), "m"(src[dxy]));
  66
  67             asm volatile(
  68                 /* [mm0,mm1] = A * src[0..7] */
  69                 /* [mm2,mm3] = B * src[1..8] */
  70                 "movq %%mm0, %%mm1\n\t"
  71                 "movq %%mm2, %%mm3\n\t"
  72                 "punpcklbw %%mm7, %%mm0\n\t"
  73                 "punpckhbw %%mm7, %%mm1\n\t"
  74                 "punpcklbw %%mm7, %%mm2\n\t"
  75                 "punpckhbw %%mm7, %%mm3\n\t"
  76                 "pmullw %%mm4, %%mm0\n\t"
  77                 "pmullw %%mm4, %%mm1\n\t"
  78                 "pmullw %%mm5, %%mm2\n\t"
  79                 "pmullw %%mm5, %%mm3\n\t"
  80
  81                 /* dst[0..7] = (A * src[0..7] + B * src[1..8] + 4) >> 3 */
  82                 "paddw %%mm6, %%mm0\n\t"
  83                 "paddw %%mm6, %%mm1\n\t"
  84                 "paddw %%mm2, %%mm0\n\t"
  85                 "paddw %%mm3, %%mm1\n\t"
  86                 "psrlw $3, %%mm0\n\t"
  87                 "psrlw $3, %%mm1\n\t"
  88                 "packuswb %%mm1, %%mm0\n\t"
  89                 H264_CHROMA_OP(%0, %%mm0)
  90                 "movq %%mm0, %0\n\t"
  91                 : "=m" (dst[0]));
  92
  93             src += stride;
  94             dst += stride;
  95         }
  96         return;
  97     }
  98
  99     /* general case, bilinear */
 100     rnd_reg = rnd ? &ff_pw_32.a : &ff_pw_28.a;
 101     asm volatile("movd %2, %%mm4\n\t"
 102                  "movd %3, %%mm6\n\t"
 103                  "punpcklwd %%mm4, %%mm4\n\t"
 104                  "punpcklwd %%mm6, %%mm6\n\t"
 105                  "punpckldq %%mm4, %%mm4\n\t" /* mm4 = x words */
 106                  "punpckldq %%mm6, %%mm6\n\t" /* mm6 = y words */
 107                  "movq %%mm4, %%mm5\n\t"
 108                  "pmullw %%mm6, %%mm4\n\t"    /* mm4 = x * y */
 109                  "psllw $3, %%mm5\n\t"
 110                  "psllw $3, %%mm6\n\t"
 111                  "movq %%mm5, %%mm7\n\t"
 112                  "paddw %%mm6, %%mm7\n\t"
 113                  "movq %%mm4, %1\n\t"         /* DD = x * y */
 114                  "psubw %%mm4, %%mm5\n\t"     /* mm5 = B = 8x - xy */
 115                  "psubw %%mm4, %%mm6\n\t"     /* mm6 = C = 8y - xy */
 116                  "paddw %4, %%mm4\n\t"
 117                  "psubw %%mm7, %%mm4\n\t"     /* mm4 = A = xy - (8x+8y) + 64 */
 118                  "pxor %%mm7, %%mm7\n\t"
 119                  "movq %%mm4, %0\n\t"
 120                  : "=m" (AA), "=m" (DD) : "rm" (x), "rm" (y), "m" (ff_pw_64));
 121
 122     asm volatile(
 123         /* mm0 = src[0..7], mm1 = src[1..8] */
 124         "movq %0, %%mm0\n\t"
 125         "movq %1, %%mm1\n\t"
 126         : : "m" (src[0]), "m" (src[1]));
 127
 128     for(i=0; i<h; i++) {
 129         src += stride;
 130
 131         asm volatile(
 132             /* mm2 = A * src[0..3] + B * src[1..4] */
 133             /* mm3 = A * src[4..7] + B * src[5..8] */
 134             "movq %%mm0, %%mm2\n\t"
 135             "movq %%mm1, %%mm3\n\t"
 136             "punpckhbw %%mm7, %%mm0\n\t"
 137             "punpcklbw %%mm7, %%mm1\n\t"
 138             "punpcklbw %%mm7, %%mm2\n\t"
 139             "punpckhbw %%mm7, %%mm3\n\t"
 140             "pmullw %0, %%mm0\n\t"
 141             "pmullw %0, %%mm2\n\t"
 142             "pmullw %%mm5, %%mm1\n\t"
 143             "pmullw %%mm5, %%mm3\n\t"
 144             "paddw %%mm1, %%mm2\n\t"
 145             "paddw %%mm0, %%mm3\n\t"
 146             : : "m" (AA));
 147
 148         asm volatile(
 149             /* [mm2,mm3] += C * src[0..7] */
 150             "movq %0, %%mm0\n\t"
 151             "movq %%mm0, %%mm1\n\t"
 152             "punpcklbw %%mm7, %%mm0\n\t"
 153             "punpckhbw %%mm7, %%mm1\n\t"
 154             "pmullw %%mm6, %%mm0\n\t"
 155             "pmullw %%mm6, %%mm1\n\t"
 156             "paddw %%mm0, %%mm2\n\t"
 157             "paddw %%mm1, %%mm3\n\t"
 158             : : "m" (src[0]));
 159
 160         asm volatile(
 161             /* [mm2,mm3] += D * src[1..8] */
 162             "movq %1, %%mm1\n\t"
 163             "movq %%mm1, %%mm0\n\t"
 164             "movq %%mm1, %%mm4\n\t"
 165             "punpcklbw %%mm7, %%mm0\n\t"
 166             "punpckhbw %%mm7, %%mm4\n\t"
 167             "pmullw %2, %%mm0\n\t"
 168             "pmullw %2, %%mm4\n\t"
 169             "paddw %%mm0, %%mm2\n\t"
 170             "paddw %%mm4, %%mm3\n\t"
 171             "movq %0, %%mm0\n\t"
 172             : : "m" (src[0]), "m" (src[1]), "m" (DD));
 173
 174         asm volatile(
 175             /* dst[0..7] = ([mm2,mm3] + 32) >> 6 */
 176             "paddw %1, %%mm2\n\t"
 177             "paddw %1, %%mm3\n\t"
 178             "psrlw $6, %%mm2\n\t"
 179             "psrlw $6, %%mm3\n\t"
 180             "packuswb %%mm3, %%mm2\n\t"
 181             H264_CHROMA_OP(%0, %%mm2)
 182             "movq %%mm2, %0\n\t"
 183             : "=m" (dst[0]) : "m" (*rnd_reg));
 184         dst+= stride;
 185     }
 186 }
 187
 188 static void H264_CHROMA_MC4_TMPL(uint8_t *dst/*align 4*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
 189 {
 190     asm volatile(
 191         "pxor   %%mm7, %%mm7        \n\t"
 192         "movd %5, %%mm2             \n\t"
 193         "movd %6, %%mm3             \n\t"
 194         "movq "MANGLE(ff_pw_8)", %%mm4\n\t"
 195         "movq "MANGLE(ff_pw_8)", %%mm5\n\t"
 196         "punpcklwd %%mm2, %%mm2     \n\t"
 197         "punpcklwd %%mm3, %%mm3     \n\t"
 198         "punpcklwd %%mm2, %%mm2     \n\t"
 199         "punpcklwd %%mm3, %%mm3     \n\t"
 200         "psubw %%mm2, %%mm4         \n\t"
 201         "psubw %%mm3, %%mm5         \n\t"
 202
 203         "movd  (%1), %%mm0          \n\t"
 204         "movd 1(%1), %%mm6          \n\t"
 205         "add %3, %1                 \n\t"
 206         "punpcklbw %%mm7, %%mm0     \n\t"
 207         "punpcklbw %%mm7, %%mm6     \n\t"
 208         "pmullw %%mm4, %%mm0        \n\t"
 209         "pmullw %%mm2, %%mm6        \n\t"
 210         "paddw %%mm0, %%mm6         \n\t"
 211
 212         "1:                         \n\t"
 213         "movd  (%1), %%mm0          \n\t"
 214         "movd 1(%1), %%mm1          \n\t"
 215         "add %3, %1                 \n\t"
 216         "punpcklbw %%mm7, %%mm0     \n\t"
 217         "punpcklbw %%mm7, %%mm1     \n\t"
 218         "pmullw %%mm4, %%mm0        \n\t"
 219         "pmullw %%mm2, %%mm1        \n\t"
 220         "paddw %%mm0, %%mm1         \n\t"
 221         "movq %%mm1, %%mm0          \n\t"
 222         "pmullw %%mm5, %%mm6        \n\t"
 223         "pmullw %%mm3, %%mm1        \n\t"
 224         "paddw %4, %%mm6            \n\t"
 225         "paddw %%mm6, %%mm1         \n\t"
 226         "psrlw $6, %%mm1            \n\t"
 227         "packuswb %%mm1, %%mm1      \n\t"
 228         H264_CHROMA_OP4((%0), %%mm1, %%mm6)
 229         "movd %%mm1, (%0)           \n\t"
 230         "add %3, %0                 \n\t"
 231         "movd  (%1), %%mm6          \n\t"
 232         "movd 1(%1), %%mm1          \n\t"
 233         "add %3, %1                 \n\t"
 234         "punpcklbw %%mm7, %%mm6     \n\t"
 235         "punpcklbw %%mm7, %%mm1     \n\t"
 236         "pmullw %%mm4, %%mm6        \n\t"
 237         "pmullw %%mm2, %%mm1        \n\t"
 238         "paddw %%mm6, %%mm1         \n\t"
 239         "movq %%mm1, %%mm6          \n\t"
 240         "pmullw %%mm5, %%mm0        \n\t"
 241         "pmullw %%mm3, %%mm1        \n\t"
 242         "paddw %4, %%mm0            \n\t"
 243         "paddw %%mm0, %%mm1         \n\t"
 244         "psrlw $6, %%mm1            \n\t"
 245         "packuswb %%mm1, %%mm1      \n\t"
 246         H264_CHROMA_OP4((%0), %%mm1, %%mm0)
 247         "movd %%mm1, (%0)           \n\t"
 248         "add %3, %0                 \n\t"
 249         "sub $2, %2                 \n\t"
 250         "jnz 1b                     \n\t"
 251         : "+r"(dst), "+r"(src), "+r"(h)
 252         : "r"((x86_reg)stride), "m"(ff_pw_32), "m"(x), "m"(y)
 253     );
 254 }
 255
 256 #ifdef H264_CHROMA_MC2_TMPL
 257 static void H264_CHROMA_MC2_TMPL(uint8_t *dst/*align 2*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
 258 {
 259     int tmp = ((1<<16)-1)*x + 8;
 260     int CD= tmp*y;
 261     int AB= (tmp<<3) - CD;
 262     asm volatile(
 263         /* mm5 = {A,B,A,B} */
 264         /* mm6 = {C,D,C,D} */
 265         "movd %0, %%mm5\n\t"
 266         "movd %1, %%mm6\n\t"
 267         "punpckldq %%mm5, %%mm5\n\t"
 268         "punpckldq %%mm6, %%mm6\n\t"
 269         "pxor %%mm7, %%mm7\n\t"
 270         /* mm0 = src[0,1,1,2] */
 271         "movd %2, %%mm2\n\t"
 272         "punpcklbw %%mm7, %%mm2\n\t"
 273         "pshufw $0x94, %%mm2, %%mm2\n\t"
 274         :: "r"(AB), "r"(CD), "m"(src[0]));
 275
 276
 277     asm volatile(
 278         "1:\n\t"
 279         "add %4, %1\n\t"
 280         /* mm1 = A * src[0,1] + B * src[1,2] */
 281         "movq    %%mm2, %%mm1\n\t"
 282         "pmaddwd %%mm5, %%mm1\n\t"
 283         /* mm0 = src[0,1,1,2] */
 284         "movd (%1), %%mm0\n\t"
 285         "punpcklbw %%mm7, %%mm0\n\t"
 286         "pshufw $0x94, %%mm0, %%mm0\n\t"
 287         /* mm1 += C * src[0,1] + D * src[1,2] */
 288         "movq    %%mm0, %%mm2\n\t"
 289         "pmaddwd %%mm6, %%mm0\n\t"
 290         "paddw      %3, %%mm1\n\t"
 291         "paddw   %%mm0, %%mm1\n\t"
 292         /* dst[0,1] = pack((mm1 + 32) >> 6) */
 293         "psrlw $6, %%mm1\n\t"
 294         "packssdw %%mm7, %%mm1\n\t"
 295         "packuswb %%mm7, %%mm1\n\t"
 296         H264_CHROMA_OP4((%0), %%mm1, %%mm3)
 297         "movd %%mm1, %%esi\n\t"
 298         "movw %%si, (%0)\n\t"
 299         "add %4, %0\n\t"
 300         "sub $1, %2\n\t"
 301         "jnz 1b\n\t"
 302         : "+r" (dst), "+r"(src), "+r"(h)
 303         : "m" (ff_pw_32), "r"((x86_reg)stride)
 304         : "%esi");
 305
 306 }
 307 #endif
 308